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The 1785-KE module mounts in an Allen-Bradley Bulletin 1771 I/O rack.
If you are using a dropline/trunkline configuration, you must mount the
1785-KE module within 100 cable feet of the Data Highway Plus
trunkline. When you are connecting the module directly to an RS-232-C
device, you must mount the 1785-KE module within 50 cable feet of that
device.
If the RS-232-C device is another Allen-Bradley communication module,
you can mount the 1785-KE module up to 7,000 cable feet away from it by
using the longline connection (discussed in Chapter 4). If you are using a
modem link to connect the 1785-KE module to the RS-232-C device, then
the module and the device may be as far apart as the modem link will
allow.
To install a 1785-KE module in an Allen-Bradley Bulletin 1771 I/O rack,
follow these steps:
1.
Perform an orderly power down of the I/O rack and its controlling
PLC processor.
WARNING:
Remove system power before removing or
installing your module in the 1771 I/O chassis. Failure to
observe this warning could result in:
damage to module circuitry
undesired operation and possible injury to personnel
2.
Set the keying bands on the I/O rack slot. The 1785-KE is keyed to
guard against installation in the wrong slot in your rack. Prior to
installing your module in the rack, you may insert optional keying
bands (provided with your 17711/0 rack) on the backplane. If you
elect to use keying bands, two are required. Insert the first between
keying positions 6 and 8. Insert the second between keying positions
12 and 14.
3.
Slide the 1785-KE module into one of the slots in the I/O rack. Snap
down the latch on the top of the module slot to secure the module in
the I/O rack.
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